Ultra high frequency generator



April 22, 1941.

v. E. WORDE N ET AL ULTRA HIGH FREQUENCY GENERATOR Filed Oct. 18, 1937 2 Sheets-Sheet 2 NTOR INVE var/v5 WORDE/V R085??- L/ CAR/Poll.

W ATTORNEY Patented Apr. 22, 1941 ULTRA HIGH FREQUENCY GENERATOR Voyne E. Worden and Robert V. Carroll, Seattle,

Wash

Application October 18, 1937, Serial No. 169,666

3 Claims.

This invention relates to an instrument for the generating of ultra high frequency currents, their use and application in medical and therapeutic treatment of human ailments, and has reference more particularly to devices in combination with a generating apparatus, capable of certain manipulations, adjustments or settings, whereby to effect the instrument to generate a current of this ultra high frequency character, selectively, within a broad range of frequencies and wave length; and to devices in combination with the generating apparatus for the delivery of these currents to a selected area of the patients body, and means associated therewith to balance or control the strength or potency of the treatment, or, in other words, the amount of this ultra high frequency current delivered to the patient.

More specifically stated, this invention refers to the controlling of the frequencies or wave lengths of these ultra high frequency currents, as stated, so that they may be varied at will to any desired predetermined frequency or wave length, in accordance with the specific application, by readings calibrated on a dial. As a result of the provisions herein disclosed, the phenomenon produced has all the characteristics of the rays of the invisible light spectrum and all their therapeutic benefits, and many advantages thereover, due to the variability and balancing thereof, as will be presently explained.

Ultra high frequency currents, vibrations, or emissions have been used previously, but a different and separate apparatus or generator had to be used for each different frequency desired, and no means have been provided heretofore to vary and balance the frequencies or wave length emitted by such a generator so that any desired frequency or wave length may be selected and used, and the absorption balanced when in use. Medical research and experiments have shown decidedly favorable results in the use of this reactivator in cases of rheumatism, arthritis, influenza, common colds, high or low blood pressure, low blood count, and many other generally known and prevalent disorders, as well as normalizing glandular activity, at difierent frequencies, and also to annihilate streptococci and staphylococci completely.

It may well be here stated that this reactivator has been chiefly designed and built in accordance with scientific medical needs, but that its application and use should not be limited thereto, but it should be recognized that it may alsobe more readily applied by this instrument in the sterilization and preservation of foods and raw materials, killing germs and bacteria, and in pest and insect extermination, and innumerable other uses.

It is the principal object of this invention to provide an ultra high frequency reactivator of the above stated character, in which are incorporated the novel means for varying and balancing of the Wave length so that any desired frequency may be selected, removing the necessity of having a different instrument for every different frequency used.

it is also an object of this invention, by means of the said variability of the instrument, to provide such an instrument that will broaden the use and application of such phenomena to the utmost extent.

It is a further object of this invention to provide an instrument of the above stated character and qualities that is small and compact and thoroughly portable, and at such a moderate cost as to be within the practical reach of all doctors, hospitals and clinics.

Still further objects of the invention reside in the details of construction, in the combination of parts and their operation as will be presently described.

In accomplishing these and other objects of the invention, we have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying drawings, wherein- Fig. 1 is a wiring diagram of the ultra high frequency reactivator, illustrating its application through the use of insulated pads.

Fig. 2 is a diagrammatic view illustrating its application through the mediacy of a parabolic reflector.

Fig. 3 is a perspective view of the case in which the instrument is housed, illustrating the panel board construction.

Fig. 4 is a perspective view of a similar case equipped with a parabolic reflector.

V Explanatory to the present invention, it will here be stated that the use of light therapy has been extensively practised, and is a well known science, and because of the phenomenal similarity in behavior of the ultra high frequency currents to the invisible light of the spectrum, along with other uses of the ultra high frequency currents, outside of therapeutics, our research and experiments were directed along this line, resulting in the evolving of the invention herein disclosed. The advantages of such an instrument lie in the increased power or potency of such currents over the light frequencies heretofore used, and in the choice of a specific frequency for each ailment; the efiects of such an application being beneficial only where such therapy is needed, and never detrimental; the application being administered in the same manner as ultra high frequency synthetic fever generators, that is, by the insulated pads or by the use of a parabolic reflector such as used. with light therapy, the latter consuming more power, however; and in the thermal effects, highly beneficial, due to higher penetrating qualities of the current as compared to light.

Briefly described, the invention herein disclosed comprises, in its simplest form, an ultra high frequency generator including two oscillator tubes with their filaments connected in parallel relationship and supplied with a low voltnecting the plates of these oscillator tubes in parallel relationship. A step-up transformer, providing current of a high voltage, has one side of its secondary coil connected to the center of the grid coil and its other side connected to the center of the tank coil; the necessary polarity being accomplished by a lead wire having one end connected to a center tap on the secondary coil of the step-down or filament transformer, and its other end connected to the wire leading from the secondary coil of the step-up transformer to the grid coil, thereby establishing the negative polarity of the grids and the positive polarity of the plates of the two oscillator tubes. Across the lead wires connecting the ends of the grid coil to the grids of the two oscillator tubes, is connected a pair of variable plate condensors, and likewise, across the lead wires connecting the ends of the tank coil to the plates of the two oscillator tubes, is connected a pair of variable plate condensors, and these two pairs of variable plate condensors are mechanically connected together for tandem operation or rotation. An output circuit :is capacitatively connected to the ends of the tank coil, through the mediacy of air gap condensors, and across this output circuit is connected a pair of variable plate'condensors, providing for the balancing of the output circuit, or the controlling of the application of these currents to the patient; it being understood that this pair of variable plate condensors across the output circuit allows part of the current therein to be by-passed. A radio output meter is also interposed in this line 51 across the output circuit, along the pair of variable plate co-ndensors. Certain other variable resistors and coils, as will be presently explained, will also be incorporated in the construction of the instrument.

Referring more in detail to'the drawings- Contained within a portable cabinet 5, having a handle 6, as seen in Figs. 3 and. 4, is the ultra high frequency generator, illustrated diagrammatically in Figs. 1 and ,2. This generator consists of transformers I and H having primary coil windings l2 and I3, respectively, connected to a source of electrical power by wires I4 and i5, with the switches 'l and 8 interposed in the line l leadingto the transformers l0 and ll, respectively.

Two oscillator tubes 20,-having filaments 2|, grids 22 and plates 23 therein, have their filaments connected in parallel relationship through the wires 24 and 26, to which are connected the wires 25 and 21, which are connected the secondary winding I! of the step-down transformer H, which will be referred to as the filament transformer.

A grid coil 23 is connected to the grids 22 in the oscillator tubes 20 by the wires 29 and 30, and a tank coil 34 is connected to the plates 23 of the oscillator tubes by the wires and 3B.

The step-up transformer l0 furnishes the power for the oscillator tubes 20 through the grid coil 28 and tank coil 34, through the lines 46 and 42, and will be referred to as the power transformer. The tank coil 34 is connected to the secondary winding Id of the power transformer H) by a wire 40, which has a radio frequency choke coil 4| interposed therein. The

rid coil 28 is connected to the secondary winding it of the power transformer Ii] by the wire 62 which has a variable resistance unit 44 interposed therein. A wire 43, leading from a center tap on the secondary coil ll of the transformer H is joined to the wire 42 thereby establishing the necessary polarity, making the grids negative and the plates positive, as will be subsequently explained.

A pair of variable plate condensors, designated by reference numerals and 4B, is connected across the ends of the grid coil 28 to the lines 29 and 30; and likewise, a pair of variable plate condensers, designated by reference numerals 41 and 4B, is connected across the ends of the tank coil to the lines 35 and 36. These two pairs of variable plate condensors are mechanically joined or coupled together for tandem or simultaneous operation or rotation, and when adjusted or manipulated to any of their many positions of rotation, thereby effect the generating of an ultra high frequency current, which is commensurate with the degree of rotation thereof. These two pairs of variable plate condensors may be set to any position for any desired frequency, in accordance with the broad range provided by the type of tube used; such frequencies may be calibrated upon a dial 65 and the condensors may be manipulated by the adjusting knob 65, as seen in Figs. 3 and 4.

Air gap condensers 50 and 5|, each of which comprises two metal plates in spaced apart relationship, are located at each side of the tank coil 34, and has its adjacent plate connected thereto by lines 53 and, respectively, and has its other plate connected, respectively, to the out-put lines 55 and 56. These out-put lines lead to the plugs or jacks 15, as seen in'Fig. 3, in the front of the cabinet.

Across the output lines 55 and 56 is a line 5?, in which is interposeda pair of variable plate condensers, designated by reference numerals 58 and59, which is operated or manipulated to any of its many positions of rotation by the adjusting knob H1 on a dial'll, as seen in Fig. 3. A radio output meter $6 is also interposed in this line 51.

Discharge coils 8B, heavily insulated with spongerubber or the like, and equipped with insulated lead Wires 8!, provided with plugs to connect with the jackconnections at 15, and of the same kind used to apply syntheticfever currents, are provided for application of the ultra ing, of an inch in diameter, and wound in a spiral 2%; inches in diameter; the turns being spaced of an inch apart, approximately. It is important that the wire 42 be tapped or connected to the exact electrical center of the tank coil 3, so that the wave length and frequency of the generated currents will be balanced, or, in other words, will be the same for each phase of the cycle of oscillation in the tubes.

In adjusting, tuning or balancing the tank coil 34, the movable plates of the two pairs of variable plate condensers 45, 15, 4! and 48 are retated all of the way out of the stationary plates, and the individual coils thereof moved or adjusted so that they are spaced uniformly at the proper distance apart, to effect the generating of a current of the proper frequency and wave length. This, of course, will be a current of the shortest wave length and the highest frequency for the particular tube used. With this step completed, the tank coil is in operating condition or alignment, and needs no more adjustment.

It will be here stated that, by rotating the movable plates of the condensers all of the Way into the stationary plates, a current will be generated having the longest wave length and the lowest frequency, for that particular tube.

Next the grid coil is adjusted, in the same manner, so that the tubes draw the proper pleted, the grid coil is in operating condition or alignment, and needs no more adjustment.

It will be here stated that the tubes now used in this instrument are of the type identified as HEE -100 osciilator tubes, and that 'I-55 or HF--200 tubes may also be used. Each of these tubes has a particular set of characteristics, and specifies the current on which it should be operated, and the frequencies of its output, as is well known by those famliar with this particular art, and it is thought that from. the foregoing explanation, those familar with this field would be able to construct and operate such an instrument.

Assuming the device to be so constructed, its operation will be as follows:

The transformers ill and H are energized by the current supplied thereto by the lines M and 55, closing the switches l and 8, the current being the usual standard commercial 110 volts 60 c cles A. C. current. In operation, the switch 8 will be turned on first, allowing the filaments to warm up properly before the current is applied to the grid and plate. The transformer H steps the voltage down from 110 v. to 10 v. and supplies the current to the filaments 2| through the lines and 27 to the lines 24 and i. which connect filaments of the two grid tubes to in parallel. The transformer Ill steps the voltage up from no v. to 1500 v., the current being conducted from the secondary coil it by the wire it and through the tank coil 34, to the plates 23 of the oscillator tubes 20, causing them to function, and completing the circuit through the grids 22, grid coil 28 and line 42. The grid coil 28 controls the bias on the oscillator tubes or, in other words, the amount of current that the grids 22 and plates 23 draw, and the tank coil 34 determines the frequency of the current generated, and the radio frequency choke 4| prevents the high frequency current from feeding back to the transformers.

By placing the pair of variable plate condensers 4'! and 58 between the lines 35 and 36, the capacity of the tank coil 34 is increased from around 5 to 35 micro-micro-farad, which is the equivalent of increasing the size of the coil.

These ultra high frequency currents from the tank coil are made applicable through the wires 55 and fifiby the air gap condensers 50 and 5|, which are connected to the tank coil 34 by the wires 53 and 5%, respectively. This connection between the tank coil and the output circuit; namely, the air gap condensers 50 and 5|, is a capacitative connection, and in operation, the charge on the plates thereof that are connected to the tank coil by the Wires 53 and 54, is impressed upon the other plates thereof, to which the output wires 55 and 56 are connected.

When a patient is placed between the insulated pads 30 and as seen in Figs. 1 and 3, and assuming the current to flow from the tank coil it, as seen in Fig. 1, through the wire 53 to the condenser 59, where it is impressed on the output circuit wire 55, it is then conducted by the wire ill to the pad 80, from which it emanates, passing through the patient, and is received or picked up by the other pad 80', and is conducted by the wire 8| to wire 56, completing its circuit to the condenser 5|, through wire 54 to tank coil 34. To vary the amount of this ultra high frequency current delivered to the patient through the pads Bil-89, the pair of variable plate condensers 58 and 53 by-pass a certain amount of the current.

It will be here stated that the application of such ultra high frequency currents will vary from person to person, due to difference in the patients size and weight. A person of larger size and greater weight seems to absorb a greater amount of current. This absorption will be indicated by the output meter, and adjustment is made in the pair of variable plate condensers 58 and 59 to balance or compensate for this, in that more or less of the current is by-passed, depending, of course, on the circumstances and treatment.

By adjusting the pair of variable plate condensers 58 and 59, either a large proportion or a small proportion of the current is by-passed therethrough, and this is apparent to the operator from the meter 6!], in that a high reading of the meter indicates that a large amount of current is being by-passed through the condenser, and a low reading indicates a small amount of current is being by-passed through the condensers; it being understood that in either case, the remainder of the current is being delivered to the patient.

As a further explanation, it will be here stated that the oscillating tubes are operating to generate a current first in one direction through the output circuit, and, on the reverse phase of the oscillation, to generate a current in the opposite direction through the output circuit.

Furthermore, the condition of the patient or the treatment itself will dictate whether the ultra high frequency current generated will be used or delivered to the patient at its minimum output, maximum output, or at some point therebetween, and for this reason the bypass means is included in the output circuit.

Treatments or application by the ultra high frequency currents are accomplished by placing the in ulated pads 89 on each side of the area to which the application is to be made, and, with the dial 65 set to a definilte frequency, the energy absorbed by the patient is compensated for and the extent or strength of the treatment controlled, as described by the adjustments of the knob 10 on the dial H.

These ultra high frequency currents, having all of the physical qualities and characteristics of the light rays in the invisible spectrum, may behandled in like manner; namely, they may be reflected. In Figs. ,2 and 4, We have illustrated the use of a reflector designated at 90, shaped in the form of a parabola. By shaping it in this Way, and placing the wires 55a and 560, on the focal line, the vibrations may be directed as a beam of light would be directed. Such ultra high frequency currents have all the penetrating qualities of the light of the invisible spectrum also, and the value of such an instrument as herein described is readily apparent.

Having thus described our invention, what we claim as new therein and desire to secure by Letters Patent is: V

1. In an ultra high frequency generator of the character described comprising a source of electrical current of predetermined potential, two oscillator vacuum tubes provided with grids, plates and heating filaments, an energizing circuit for said heating filaments, connecting them in parallel relationship, and including a stepdown transformer of predetermined output, and provided with a center tap, and having its secondary coil conductively connected to said filament energizing circuit and its primary coil conductively connected to said source of electrical current; a grid coil of predetermined capacity conductively connecting the said grids in parallel relationship and a plate coil of predetermined capacity conductively connecting the said plates in parallel relationship; a step-up transformer of predetermined output having its primary coil conductively connected to said source of electrical current and oneside of its secondary coil conductively connected to the center of the grid coil and the other side of its secondary coil conductively connected to the center of the plate coil, a variable resistance included in the said connection to the said grid coil, and a radio frequency choke coil included in the said connection to the said plate coil, and having a conductive connection from the said center tap of the step-down transformer to the said connection to the said grid coil, a pair of variable condensers coupling the said grids in parallel relation, and a similar pair of variable condensers coupling the said plates in parallel relation; said pairs of variable condensers operable to vary the wave length or frequency of the generated high frequency currents, and an output circuit capacitatively coupled to ends of said plate coil.

2. In a high frequency apparatus as in claim 1, wherein means are provided to operate said two pairs of variable condensers in unison.

3. In a high frequency apparatus as in claim 1, wherein the output circuit comprises two wires, one of which is capacitatively coupled to one end of the said plate coil and the other is capacitatively coupled to the opposite end of said plate coil; said wires of the output circuit connected by a cross wire within which is interposed a pair of variable condensers and a radio frequency out-put meter.

VOYNE E. WORDEN. ROBERT V. CARROLL; 

